SUMMARY Seismic waves are typically assumed to propagate fast enough through a porous rock saturated with multiple fluid phases such that the interaction between fluids can be considered adiabatic, or thermodynamically unrelaxed. However, at low gas saturations and when is present in form of microscopic bubbles mixture may fact relaxed seismic frequencies. The effective then significantly more ...

Abstract Rock anchors are used to stabilise large scale infrastructures. Failure of rock could threaten the stability and lead severe economic social consequences. The design is based on four principal failure modes, which breakage steel tendon, tendon-grout interface failure, grout-rock mass around anchor. current dimensioning methods uncertain due limited knowledge bond strength failure. meth...

Geophysical methods for local rock burst prediction are currently being developed along two lines: improving recording equipment and data processing methods. Progress in developing is constrained by the lack of informative prognostic models that describe condition mass, process mass fracturing, phenomena can substantiate choice both criteria test parameters give an estimate time remaining until...

The determination of mechanical properties of granitic rocks has a great importance to solve many engineering problems. Tunnelling, mining and excavations are some examples of these problems. The purpose of this paper is to apply Data Mining (DM) techniques such as multiple regressions (MR), artificial neural networks (ANN) and support vector machines (SVM), to predict the uniaxial compressive ...

We describe a modified KKLT mechanism of moduli stabilization in a supersymmetric Minkowski vacuum state. In this mechanism, supersymmetry ensures vacuum stability and positivity of the mass matrix for the dilaton, complex structure, and volume modulus.

Evaluating rock masses for dam foundations, especially heterogeneous (flysch), becomes imperative and requires accurate geomechanical classifications. The rocks at the Kanarwe river basin, a proposed site (Goma-Qazan near Khewata, Sura Qalat villages), mainly consist of interlaying massive carbonate Aqra Formation with flysch Tanjero Formation. Therefore, selecting appropriate types is challeng...